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3-7 Focusing
a
20
1
b
a
b
2
a
b
3
Moving the BXFM frame vertically
Turn the coarse focusing knob a and the fine focusing knob b in
the arrow direction to move the BXFM frame downward. (The objective
approaches the sample.)
Adjusting the tension of the coarse focusing knob
Be sure to use the tension adjustment ring a for
NOTE
adjusting the tension of the coarse focusing knob.
The tension of the coarse focusing knob is adjusted to the easy-
to-use tension, but if you want to change the tension, turn the
tension adjustment ring a in the arrow direction to increase the
tension and turn in the opposite direction to decrease the tension.
If the focus obtained with the fine focusing knob is lost soon, the
tension is set too loose. In this case, turn the tension adjustment ring
a in the arrow direction to increase the tension.
If you want to increase the tension of the tension adjustment
TIP
ring, insert the provided Allen screwdriver into the hole b
(either one of 4 positions) of the adjustment ring to increase
the tension.
Using the rubber cap for fine focusing knob
Putting this rubber cap on the fine focusing knob allows you to turn
the fine focusing knob lightly and bring the sample into focus finely
and easily.
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